PPC has advantage when compared to OPC :
• Higher durability of concrete structure due to less permeability of water.
• More resistance towards the attack of alkalies, sulphates, chlorides, chemicals.
• Better work ability.
• Low heat of hydration.
• Due to high fineness, PPC has better cohesion with aggregates and makes more dense concreteness.
• Comparative lower Water-Cement ratio provides an added advantage for the further increase of compressive strength of the concrete.
• Better surface finish.
& Cost of PPC is less then OPC.
( Insted of PPC its better to go with OPC + Flyash up to 70:30 propertions for normal slabs i.e up to grade M30)
For Finishing works PPC is prefered.
Where the early strength is reqired OPC is prefered.